2013816 has 32 divisors (see below), whose sum is σ = 5754240. Its totient is φ = 575328.

The previous prime is 2013787. The next prime is 2013821. The reversal of 2013816 is 6183102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2013792 and 2013801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5826 + ... + 6161.

It is an arithmetic number, because the mean of its divisors is an integer number (179820).

2^2013816 is an apocalyptic number.

It is an amenable number.

2013816 is an abundant number, since it is smaller than the sum of its proper divisors (3740424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2013816 is a wasteful number, since it uses less digits than its factorization.

2013816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003 (or 11999 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2013816 is about 1419.0898491639. The cubic root of 2013816 is about 126.2815573173.

Adding to 2013816 its reverse (6183102), we get a palindrome (8196918).

The spelling of 2013816 in words is "two million, thirteen thousand, eight hundred sixteen".